package com.atguigu.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * @version 1.0
 * @Author yanjingren
 * @Date 2021/7/6
 * @Description com.atguigu.gulimall.order.config
 */
@Configuration
public class GuliFeignConfig {

    @Bean
    public RequestInterceptor requestInterceptor() {
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                // RequestContextHolder 拿到刚进来的这个请求
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (attributes != null) {
                    HttpServletRequest request = attributes.getRequest();   // 老请求
                    if (request != null) {
                        // 同步请求头数据， cookie
                        requestTemplate.header("Cookie", request.getHeader("Cookie"));
                    }
                }
//                System.out.println("feign远程之前先进行RequestInterceptor.apply方法");
            }
        };
    }

}
